Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 7: Poster Magnetism I
MA 7.36: Poster
Montag, 9. März 2026, 09:30–12:30, P2
Imaging Magnetic Orders in Topological Kagome Ferro- and Antiferromagnets using Single-Spin Magnetometry — •Anusree Vannada Puleri, Yuchen Zhao, Claire Donnelly, Uri Vool, Claudia Felser, and Edouard Lesne — Max-Planck-Institute für Chemische Physik fester Stoffe, Dresden, Germany
Kagome magnets are promising candidates for next-generation memory applications due to their high ordering temperatures and untapped unconventional magnetic ground states and topological properties. These include large anomalous Hall and spin Hall responses arising from sizeable accumulations of Berry curvature in momentum space.
In this study, we focus on the Kagome ferromagnet (FM) Fe3Sn2 which exhibits massive Dirac fermions and noncollinear FM order [1], and the Kagome antiferromagnet Mn3Sn, which displays non-collinear anti-ferromagnetism and Weyl fermions [2]. We present how high-quality epitaxial thin films of Fe3Sn2 and Mn3Sn, can be grown using magnetron sputtering, with controlled tuning of thicknesses and strain. We perform detailed structural characterizations, and resort to a combination of magnetic force microscopy, and nitrogen vacancy (NV)-based magnetometry to image FM and AF domains in these intriguing Kagome magnets.
References:
[1] L. Ye et al., Nature 555, 638-642 (2018).
[2] S. Nakatsuji et al., Nature 527, 212-215 (2015).
Keywords: Fe3Sn2; Mn3Sn; Kagome; Magnetron sputtering; NV magnetometry